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Journal of Nanoparticle Research

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01.02.2010 | Research Paper

Synthesis of coiled carbon nanotubes on Co/Al₂O₃ catalysts in a fluidised-bed

verfasst von: Jun Liu, Andrew T. Harris

Erschienen in: Journal of Nanoparticle Research | Ausgabe 2/2010

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Abstract

Mixtures of regularly coiled and straight multi-walled carbon nanotubes (MWNTs) were synthesised on alumina supported Co catalysts prepared by pH controlled, wet impregnation. The synthesis reaction was performed under C₂H₂:H₂:N₂ at 750 °C in a fluidised-bed for 30 min. Scanning electron microscopy/energy dispersive X-ray spectroscopy shows good distribution of the active Co particles on the surface of the alumina support. Determined from 10 individual SEM images from the same product batch, the CNTs present are typically from 10 to 40 nm in diameter. Thermogravimetric analysis (TGA) and Raman spectroscopy indicate the total oxidative weight loss is independent of pH during catalyst preparation. This study is the first to report the use of a fluidised-bed for the synthesis of coiled MWNTs, using alumina supported Co catalysts.

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Titel: Synthesis of coiled carbon nanotubes on Co/Al2O3 catalysts in a fluidised-bed
verfasst von: Jun Liu
Andrew T. Harris
Publikationsdatum: 01.02.2010
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 2/2010
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-009-9634-x

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